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L561 Levee Restoration Information

Background: The L561 - Nishnabotna Left Bank & High Creek Right Bank Levee System was damaged during the 2019 runoff event, leading to the Levee Sponsor submitting a Public Law (PL) 84-99 Rehabilitation Assistance request to the US Army Corps of Engineers – Omaha District.

Current Action: Repair the levee system to its authorized level of flood risk management.

Restoration Activities:

 

Full Repair Contract 

Contractor

Young's General Contracting, Inc. from Poplar Bluff, MO 

Contract Amount

$6.5M

Contract Award

December 18, 2019

  Construction Start

February 14, 2020

Completion

Period of performance is 210 days

 

 

 

 

 

 

 

Status Updates:

08 May 2020 - The contractor is repairing scour erosion along the levee and is approximately 55 percent complete with the final levee repair project.

23 April 2020 - The contractor is repairing scour erosion along the levee and is approximately 45 percent complete with the final levee repair project.

10 April 2020 - The contractor is repairing scour erosion along the levee and is approximately 15 percent complete with the final levee repair project.

16 March 2020 - The contractor is currently cleaning out the drainage structure along the levee system and mining cohesive borrow material.

04 March 2020 - The contractor has mobilized to the project site and begun levee repairs.

13 February 2020 - The contractor is scheduled to mobilize to the project site in mid-February.

31 January 2020 - The pre-construction meeting was held on 22 January 2020 with the contractor scheduled to mobilize to the project site in mid-February 2020.

10 January 2020 - The pre-construction meeting has been scheduled for 21 January 2020.

18 December 2019 - The contract for L-561 levee repairs was awarded on 18 December 2019 to Young's General Contracting, Inc. of Poplar Bluff, MO in the amount of $6.5 million. The period of performance to complete the levee repairs is 210 calendar days after notice to proceed is provided to the contractor.

06 December 2019 - The levee repair contract was advertised on 15 November 2019 with the pre-bid site visit occurring on 25 November 2019. The bid opening is scheduled for 10 December 2019.

22 November 2019 - The levee repair contract was advertised on 15 November 2019 with the pre-bid site visit scheduled for 25 November 2019 and the bid opening scheduled for 03 December 2019.

08 November 2019 - The team is anticipating advertising the levee repair contract in the next few weeks with award by the end of the calendar year. This anticipated schedule is dependent on real estate documentation being finalized with the adjacent property owners.

24 October 2019 - The team is anticipating advertising the levee repair contract in the next few weeks with award by the end of the calendar year. This anticipated schedule is dependent on real estate documentation being finalized with the adjacent property owners.

13 October 2019 - The team is anticipating advertising the L-561 Nish levee repair contract next week.  However, this will be dependent upon the team finalizing real estate documentation with the adjacent property owners.

27 September 2019 – Funds to repair the L-561 levee system have been received. The construction contract is scheduled to be awarded at the beginning of December.

13 September 2019 – The team is working to finalize the levee repair design for the L-561 levee system. It is anticipated that the contract for construction bids will be advertised in October.

06 September 2019 – The team has identified a few concerns with the initial levee repair design and is working on revising the design.  This also includes coordination with the levee sponsor on the updated path forward with the design.

29 August 2019 – Team continues engineering and design work on repairs for the Nishnabotna levee system. Design is expected to be complete by late summer/early fall at which time a construction contract will be advertised and awarded to repair the system.

13 August 2019 – Engineering and Design (E&D) work continues for rehabilitating the L561 Nishnabotna levee system.  The team is still anticipating to be done with the E&D process by late-summer or early-fall.

31 July 2019 – The USACE Design team and Levee Sponsor conducted a “Plan In-Hand” review of the repair design documents on 30 July 2019.  These reviews are conducted to ensure that the team is developing a technically feasible and acceptable design.

22 July 2019 – Engineering and Design (E&D) work continues.  The team is still anticipating to be done with the E&D process by late-summer or early-fall.

08 July 2019 – Engineering and Design (E&D) work is on-going for rehabilitating the L-561 levee system.  The team is anticipating to be done with the E&D process by late-summer or early-fall.

15 June 2019 – An initial site damage assessment and economic analysis has been completed.  From this initial assessment the USACE team has determined that there are damages to the levee system that are eligible for PL 84-99 Rehabilitation Assistance. 

NOAA River Level Observations & Forecasts

NOAA Water Gauge Levels

L561 Levee Imagery

USACE Engineering and Construction Team and the Local Levee Sponsor conducting the Plan In-Hand Review on the L-561 Nishnabotna Levee July 30, 2019.
Damaged Levee L561 Apr. 23, 2019 near Hamburg, Iowa.
Damaged Levee L561 Apr. 23, 2019 near Hamburg, Iowa.
Damaged Levee L561 Apr. 23, 2019 near Hamburg, Iowa.

Video Gallery

Video by Michael Glasch
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Aerial View of Levee L561 near Turkey Creek Apr. 15, 2019
U.S. Army Corps of Engineers, Omaha District
April 15, 2019 | 1:10
Aerial view of Levee L561 near Turkey Creek Apr. 15, 2019, following March 2019 runoff event. (Video by Mike Glasch)
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